this is very first time I'm trying dual VGAs - my Richaland
APU lost VDAPU with recent mesa/kernel, so I thought I'd try
I use Asrock FM2A88X-ITX+ and just got brand new rx550.
question - how to get it work? what's preferable config?
I've tried but cannot disable onboard GPU.
It disables in the BIOS and I choose primary VGA to be RX550
yet when the f26 boots onboard GPU is still active and
actually seems to be primary VGA.
It's bit crazy - I use disk encryption so get prompt for
password - but this prompt gets output via onboard APU's gpu
whereas system(bios) boots with external PCIe to be primary.
And BIOS does set rx550 as primary, shows it's POST on
rx500, kernel selection to boot, initial boot and then...
blank, I've to go APU's vga to get password prompt.
Later in Gnome it's also not possible, well, I cannot
re-arrange VGAs using GUI.
Where has it all gone wrong? I've thought AMD's APUs where
out and in our boxes for so long that I should just work
Would you have some experience and advice you can share?
many thanks, L.
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